Coherence overview
A Coherence cluster is a set of Coherence nodes that work together to provide a distributed caching service. A node may be an application server instance or a Java process running Coherence binaries. Coherence functionality is based on the concept of cluster services. Each node can either provide or consume a number of named services. The services may either be caching or data service, connectivity services, management service, and so on. A node providing a caching service is often referred to as a storage node and a node providing management node i.e. hosting the Mbean server is referred to as a management node. For more about Coherence, refer to the Coherence documentation in the Oracle Technology Network at: http://download.oracle.com/docs/cd/E14526_01/index.htm
Oracle Coherence comes with several flavors or editions. Take a look at the Oracle Technology Network for the features offered by each edition: http://www.oracle.com/technology/products/coherence/coherencedatagrid...